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Heart|Natural|GIA

1.51ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 6481518557

Certificate GIA 6481518557

Diamond specifications and retailer prices

From $8,530 SGD
As of November 4, 2026
Save $6,476 SGD (43%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $15,007 SGD at MOH London · As of November 4, 2026
View at MOH London

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6481518557. Listed at 19 retailers as of November 4, 2026, with prices from $8,530 to $15,007, a $6,476 spread on the same certified stone. MOH London lists it at $15,007. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6481518557
Dimensions7.15 × 6.78 × 4.48 mm
L/W Ratio1.05
Top View
7.15 mm6.78 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6481518557
Side View
Table 60.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 66.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $15,007 SGD|Low: $8,530 SGD|High: $15,209 SGD|Avg: $10,997 SGD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 4$8,530 SGD
Retailer 11$9,028 SGD
Retailer 3$9,029 SGD
Retailer 12$9,104 SGD
Retailer 6$10,093 SGD
Retailer 2$10,118 SGD
Retailer 10$10,353 SGD
Retailer 9$10,355 SGD
Retailer 5$11,730 SGD
Retailer 7$13,172 SGD
Retailer 8$14,909 SGD
MOH London$15,007 SGD

36 data points across 12 retailers

19 retailers$8,530 SGD to $15,007 SGD

B+
Cheapest Retailer
-
$8,530 SGD
B+
Retailer 2
-
$8,580 SGD
View
B+
Retailer 3
-
$9,028 SGD
View
Final sale: no returns
B+
Retailer 4
-
$9,029 SGD
View
Retailer 5
-
$9,029 SGD
View
Price last confirmed 30 days ago
B+
Retailer 6
-
$9,104 SGD
View
B+
Retailer 7
-
$9,616 SGD
View
B+
Retailer 8
-
$10,093 SGD
View
B+
Retailer 9
-
$10,118 SGD
View
B
Retailer 10
-
$10,353 SGD
View
Retailer 11
-
$10,355 SGD
View
Price last confirmed 16 days ago
B
Retailer 12
-
$10,381 SGD
View
B
Retailer 13
-
$10,381 SGD
View
B
Retailer 14
-
$10,727 SGD
View
B
Retailer 15
-
$10,869 SGD
View
B
Retailer 16
-
$11,730 SGD
View
B
Retailer 17
-
$13,172 SGD
View
Retailer 18
-
$14,909 SGD
View
Price last confirmed 10 days ago
Most Expensive
B
MOH London
7918798AC · Nov 4
$15,007 SGD
£9,220 GBP
View
18 more retailers have this diamond
Prices start from $8,530 SGDSave up to $6,476 SGD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.51ct Heart
$8,530 SGD